I was a part of a project course for about four months working as a team member in one of the teams, the project was extremely hard for all of us, but we were working real good together keeping up, but out of three of us, one was being a bit lazier than the other and usually me and one other of team members was doing most of the things, I hate to say I did everything, but as far as this is a case of rights and equality, I want to say that preparing all the presentations, writing the final reports, programming-side, all was on me.. Now when the grades have come out, the person that did the least has got the highest grade (5), while me and the other team member who did most got lower grades than them (we got 4). It wouldn't irritate me as much if all three of us had gotten 4, but it's ridiculous when the person who had put the least effort has gotten 5..
Grading was based on team members grading each other plus the instructors in charge of the course grading people too. In grading team members, I gave everybody full points, and I am very sure everyone else in my team also gave me full points, I have no doubts about that.
How would you deal with such an unfair case?
If it's exactly the way you say and you are not wrong about this, then think like this: it's a lesson that life is very unfair . It has happened to me too, I was a student in Strasbourg - a human rights master. There was someone from a certain country and there is no friendship between her country and mine, if you understand what I mean and this girl did everything she could to make others think badly about my team work, she even tried this in front of a Professor. Just because I was from my country. I was lucky that the French did not believe her . Anyway what you say there it can happen in a big company, a law firm too and so on. Talk to your professor.